Ligand Pharmaceuticals Incorporated operates as a biopharmaceutical entity, primarily engaged in sourcing and advancing technologies to empower pharmaceutical companies globally in their efforts to discover and develop novel therapeutic solutions. Its diverse portfolio of commercialized products addresses a wide range of medical conditions. For hematologic malignancies, these include Kyprolis and Evomela, both targeting multiple myeloma, as well as Rylaze, a treatment for acute lymphoblastic leukemia and lymphoblastic lymphoma in both adult and pediatric patients.